Prolific bit player and future "Carry On" regular, Ian Wilson can be spotted as a passenger looking out the window.
Finlay Currie would later play the McBane character (called MacBain) in this film's remake, Sleeping Car to Trieste (1948).
The first production at Shepherd's Bush studios.
The "WL" embroidered on the seat covers is not an abbreviation for the name of the railway, but stands for "Wagon-Lit" (Sleeping Carriage).